نتایج جستجو برای: detour index

تعداد نتایج: 396908  

Journal: :Communications in Statistics - Theory and Methods 1984

Journal: :Journal of comparative psychology 2006
Charles Locurton Andrea Benoit Caitlin Crowley Andrea Miele

Two experiments examined the structure of individual differences in mice by means of tasks that produced significant acquisition within 1 session. In Experiment 1, 5 cognitive tasks-detour, winshift, olfactory discrimination, fear conditioning, and operant acquisition-were used in conjunction with two control procedures: an open field and a light- dark test. In Experiment 2, some modifications ...

2004
Adrian Dumitrescu Ansgar Grüne Günter Rote

Let G be an embedded planar graph whose edges are curves. The detour between two points u and v (on edges or vertices) of G is the ratio between the shortest path in G between u and v and their Euclidean distance. The maximum detour over all pairs of points is called the geometric dilation δ(G). Ebbers-Baumann, Grüne and Klein have recently shown that every finite point set is contained in a pl...

2010
Ansgar Grüne Tien-Ching Lin Teng-Kai Yu Rolf Klein Elmar Langetepe D. T. Lee Sheung-Hung Poon

The spanning ratio and maximum detour of a graph G embedded in a metric space measure how well G approximates the minimum complete graph containing G and metric space, respectively. In this paper we show that computing the spanning ratio of a rectilinear path P in L1 space has a lower bound of Ω(n log n) in the algebraic computation tree model and describe a deterministic O(n log n) time algori...

2002
Mircea V. DIUDEA Ionel Haiduc

Rev. Roum. Chim. (submitted). Abstract Similarity of two sets of cycle-containing molecular graphs: spiro-alkanes and full Hamiltonian detour cubic cages, is discussed in terms of interand intra-molecular similarity. Molecular description is given as sequences of some well known topological sequences: Distance Degree Sequence DDS, Detour Degree Sequence ∆DS, All Path Sequence APS, Shortest Path...

2016
Mohammadreza Khorasaninejad Antonio Ambrosio Pritpal Kanhaiya Federico Capasso

Subwavelength structured surfaces, known as meta-surfaces, hold promise for future compact and optically thin devices with versatile functionalities. By revisiting the concept of detour phase, we demonstrate high-efficiency holograms with broadband and chiral imaging functionalities. In our devices, the apertures of binary holograms are replaced by subwavelength structured microgratings. We ach...

Journal: :Development 1999
A Chandrasekhar H E Schauerte P Haffter J Y Kuwada

The zebrafish detour (dtr) mutation generates a novel neuronal phenotype. In dtr mutants, most cranial motor neurons, especially the branchiomotor, are missing. However, spinal motor neurons are generated normally. The loss of cranial motor neurons is not due to aberrant hindbrain patterning, failure of neurogenesis, increased cell death or absence of hh expression. Furthermore, activation of t...

Journal: :J. Comb. Optim. 2007
Bing Su Qingchuan Xu Peng Xiao

Let PG(s, t) denote a shortest path between two nodes s and t in an undirected graph G with nonnegative edge weights. A detour at a node u ∈ PG(s, t) = (s, . . . , u, v, . . . , t) is defined as a shortest path PG−e(u, t) from u to t which does not make use of (u, v). In this paper, we focus on the problem of finding an edge e = (u, v) ∈ PG(s, t) whose removal produces a detour at node u such t...

Journal: :Journal of Advanced Transportation 2022

Pricing directly affects the sustainable development of flexible bus service. This study proposes a profit maximization model and social welfare for operator based on cumulative prospect theory. Fares uncertain travel time due to unforeseen detours in serving passengers jointly affect passengers’ mode choice. On other hand, fares probabilistic choices over determine profits company welfare. exp...

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